The true definition of "gonk" is when you backhand a guy right in the nuts. Saying the word "gonk" at the same time is required. The word gonk is used by only the best of all backhanders. Are you the best?

The script you follow:
You - (Backhanding the guy becide you) "GONK!"
Other Guy - "Aww fuck. What the hell was that for?"

"I gonked that other guy the other day."
"Lets have a truce. No gonking eachother."

A gonk is a very stupid, ditsy girl that may or may not be a huge slut as well.

1. A sorority girl that wears her North Face jacket, Ugg boots, and leggings.
2. A girl that has absolutely no hobbies/past times besides going to the bars and getting drunk with her "besties."
3. Can even be used in referring to a "hipster" girl who thinks that she is cooler than everyone else, but in all reality she is still a naive girl that drinks PBR, uses a mac, and thinks she's a good photographer.